Rupture of muscle, either complete or incomplete, is a fairly frequent occurence. It may be caused by direct or indirect violence, and occurs either in normal or diseased muscle. Undoubtedly if any of the aching and painful muscles resulting from trauma is examined, a considerable number of partial ruptures would be found which is often overlooked or wrongly diagnosed as a strain, hematoma, myositis and neuralgia etc. We had the opportunity to examine the 15 patients with ruptured muscles. Our survey is presented in this paper.